Cable suspension type stress movement test equipment and test method

Abstract

The invention provides cable suspension type stress movement test equipment and a test method. The test equipment comprises a first wheel disc assembly on which a cable sample is wound; the second wheel disc assembly is arranged obliquely below the first wheel disc assembly and is used for controlling the bending direction of the cable sample; the moving assembly is arranged on the horizontal side, away from the first wheel disc assembly, of the second wheel disc assembly and used for fixing one end of the cable sample and driving the cable sample to reciprocate in the vertical direction and / or the horizontal direction; the driving device is connected with the moving assembly and used for controlling the moving assembly to move; the control operation table is electrically connected with the driving device and is used for setting test parameters; and the load bearing device is connected with the other end of the cable sample. According to the invention, the real working condition of the cable sample during overhanging stress movement can be simulated to carry out the dynamic test of the reciprocating variable-diameter bending of the cable, and the bending performance level of the cable can be reflected more comprehensively.

Description

Technical Field

[0001] The present invention relates to the technical field of cable testing, and in particular to a cable suspension type force-bearing mobile testing device and a testing method. Background Art

[0002] With the continuous progress of social economy and social construction, various infrastructure projects and high-rise buildings have rapidly emerged across the country and even around the world, greatly improving people's quality of life and convenience. Especially in recent years, with the rapid development of intelligent new energy industries such as wind power and photovoltaic power generation, these industries have not only contributed to environmental protection, but also promoted the innovation and application of related technologies. However, in this series of development processes, the requirements for equipment are also increasing, especially in specific scenarios such as elevators and wind power towers. Cables are key components for connection and transmission, and their performance directly affects the stability and safety of the entire system.

[0003] In these special applications, when the cable is excessively bent or repeatedly twisted, the internal conductor is prone to breakage, especially in areas where the cable moves frequently. Once a core is broken, it will directly lead to power or signal transmission interruption, affecting the normal operation of the equipment. In addition, the cost of repairing a cable after a core break is high, and sometimes even the entire cable needs to be replaced, increasing maintenance costs and workload. In addition, during the process of contact and friction between the cable and surrounding objects (such as machine parts, the ground, etc.), if the cable sheath material is not wear-resistant enough or the design is unreasonable, it is easy to cause the sheath to break, thereby exposing the internal conductor and increasing the risk of short circuit. Wear and tear will not only shorten the service life of the cable, but may also cause serious safety accidents such as fire.

[0004] Therefore, in order to ensure that the cable can perform well in practical applications in special applications, it is particularly important to develop special testing equipment. At present, technical personnel in this field have developed some cable bending test devices, but these test devices have some unavoidable problems: 1. Existing test devices can often only perform reciprocating bending tests at specific angles and bending radii, and the reciprocating bending process of the cable in actual application is bending with variable diameters. Therefore, the existing technology has the problem of being unable to simulate the actual working conditions and cannot truly reflect the bending performance level of the cable in actual application; 2. Existing test devices can often only simulate the reciprocating bending of one point of the cable, and generally the cable cannot move, which is a static reciprocating bending test, and the reciprocating bending process of the cable, especially the suspension cable, in actual application occurs under load movement. Therefore, the existing technology has the problem of being unable to simulate the actual working conditions and cannot reflect the dynamic bending resistance of the overall cable. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a cable suspension type force-bearing mobile testing device and a testing method.

[0006] In order to achieve the above purpose and other purposes, the present invention is implemented by including the following technical solutions: as a first aspect, the present invention provides a cable suspension type force mobile test equipment, including a first wheel disc assembly, on which a cable sample is wound; a second wheel disc assembly, arranged at an angle below the first wheel disc assembly, for controlling the bending direction of the cable sample; a moving assembly, arranged on the horizontal side of the second wheel disc assembly away from the first wheel disc assembly, for fixing one end of the cable sample and driving the cable sample to reciprocate in the vertical direction and / or horizontal direction; a driving device, connected to the moving assembly, for controlling the movement of the moving assembly; a control console, electrically connected to the driving device, for setting test parameters; a load-bearing device, connected to the other end of the cable sample.

[0007] In one embodiment, the first wheel assembly includes a fixing bar and a first wheel, the wheel center shaft of the first wheel is fixed on the fixing bar, and the first wheel can rotate around its wheel center shaft.

[0008] In one embodiment, the second wheel disc assembly includes a track bar and a second wheel disc, the wheel center axis of the second wheel disc can be adjusted in a horizontal installation position on the track bar, and the second wheel disc can rotate around its wheel center axis.

[0009] In one embodiment, a diameter of the second wheel disc is smaller than a diameter of the first wheel disc.

[0010] In one embodiment, the moving assembly includes a slider, a vertical moving track and a transverse moving track, the slider is fixedly connected to one end of the cable sample and slidably mounted on the vertical moving track; the vertical moving track is slidably mounted on the transverse moving track.

[0011] In one embodiment, the load-bearing device is connected to the other end of the cable sample through a load-bearing mesh; the load-bearing mesh is woven with multiple strands of steel wire, and the first end forms a mesh-shaped mesh for hooping the cable sample; the second end forms a wire rope loop, and the load-bearing device is hung on the second end of the load-bearing mesh through a hook; when the second end of the load-bearing mesh is subjected to force, the first end thereof contracts and hoops the cable sample

[0012] In one embodiment, the control console includes a display screen for setting test parameters, a start / stop button, and a stop button.

[0013] In one embodiment, the cable sample meets the finished product performance test and each core is conductive before the test.

[0014] As a second aspect, the present invention provides a cable suspension force movement test method, using the cable suspension force movement test device as described in any one of the first aspects to perform the test, comprising the steps of:

[0015] S1. Select a cable sample for testing, connect one end of the cable sample to the load-bearing device through a load-bearing mesh sleeve, and place the other end on a vertical moving track;

[0016] S2, setting test parameters on the control console and starting the test;

[0017] S3. After a period of operation according to the test parameter settings, a circuit connection test is performed on both ends of the cable sample. If the test is not conductive, the test is considered to be over, otherwise, the subsequent test is continued;

[0018] S4. Complete the test, test the appearance and electrical properties of the cable sample, and obtain corresponding test results.

[0019] In one embodiment, in step S1, the two ends of the cable sample are respectively connected to a conducting circuit, and the conducting circuit is connected to the control console; the two ends of the cable sample and the conducting circuit are connected in step S3.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The cable suspension force-bearing mobile test equipment provided by the present invention connects one end of the cable sample to the mobile component, and the other end passes through the second wheel disc component and the first wheel disc component in turn and is connected to the load-bearing device to form a curved route for the cable sample. This design can truly simulate the operation mode of the cable in actual applications, especially the dynamic load conditions in scenarios such as high-altitude erection and wind power towers. Through this dynamic test of reciprocating variable diameter bending, the bending performance level of the cable can be more comprehensively reflected, thereby improving the efficiency and accuracy of the evaluation of the operating safety and stability of such cables. This not only helps to ensure the continuity and reliability of the cable in powering the equipment, but also provides important data support for the design optimization of the cable;

[0022] 2. The first wheel of the present invention can only rotate at a fixed point, while the second wheel can move left and right to change the horizontal position, so as to control the bending direction of the cable sample and change the bending direction and bending radius of the cable sample according to the test needs; in this way, the stress of the cable under different working conditions can be simulated, and the performance of the cable under various conditions can be more accurately evaluated. This is especially important for the application of cables in complex environments, such as industrial automation equipment, wind turbines, etc., where cables often need to withstand multi-directional bending and stretching;

[0023] 3. The diameter of the second wheel of the present invention is smaller than that of the first wheel, which can increase the adjustment range of the bending direction; the smaller diameter of the second wheel makes it easier for the cable sample to form a larger bending angle when passing through, thereby better simulating the use of the cable under extreme conditions, so that the test equipment can be applied to more types of cables;

[0024] 4. The present invention can test the reciprocating movement of the cable sample only in the vertical direction or the horizontal direction by setting the vertical moving track and the horizontal moving track that can be linked, and can also test the reciprocating movement of the cable sample in the vertical direction and the horizontal direction at the same time; the simulated application scenarios are wider;

[0025] 5. The present invention connects the cable through the load-bearing mesh sleeve. The load-bearing mesh sleeve is stressed at one end and shrunk and tightened at the other end, which can ensure that the cable sample is evenly stressed without destroying the main structure of the cable sample, thereby avoiding the influence of the connection process on the cable test results.

[0026] 6. The present invention periodically performs circuit connection tests on cable samples during the test process, can grade the bending resistance of the cable, and stop the test in time when the cable is damaged, thus avoiding occupying test resources and wasting test time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a cable suspension type force-bearing mobile testing device of the present invention.

[0028] Figure 2 The present invention is a schematic flow chart of a cable suspension force movement test method. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportion relationship or adjustment of the size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0031] In the present invention, the serial numbers assigned to the components, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words "one", "an" or "the" and the like used in the present invention do not indicate a quantitative limitation, but are only used to indicate the existence of at least one. The "connection" mentioned in the present invention includes direct and indirect connections unless otherwise specified. The terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusions, and may include other elements not explicitly listed in addition to those listed elements.

[0032] In order to avoid confusion with the present invention, some technical features known in the art are not described.

[0033] See also Figure 1 The present invention provides a cable-suspended force-bearing mobile testing device, comprising a first wheel disc assembly 110, a second wheel disc assembly 120, a moving assembly 130, a driving device 140, a control console 150 and a load-bearing device 160.

[0034] The first wheel assembly 110 includes a fixing bar 111 and a first wheel 112. The fixing bar 111 is used to fix the first wheel 112 so that the first wheel 112 can rotate at a fixed position. Specifically, the fixing bar 111 can be fixed to a frame (not shown in the figure) of the cable suspension force mobile test equipment, and the fixing method can be welding, bolt connection, etc. The first wheel 112 is used to carry the cable sample 200. The cable sample 200 passes through the first wheel 112 to form a curved route for bending performance testing. Specifically, the wheel center axis of the first wheel 112 is fixed to the fixing bar 111 to realize the rotation of the first wheel 112 around its wheel center axis.

[0035] The second wheel assembly 120 is disposed obliquely below the first wheel assembly 110, and includes a track bar 121 and a second wheel 122. The wheel center shaft of the second wheel 122 is movably mounted on the track bar 121. The second wheel 122 can be adjusted in the horizontal direction on the track bar 121, and can also rotate around its wheel center shaft. The design of the second wheel 122 is mainly used to control the bending direction of the cable sample 200 (although Figure 1The cable sample 200 shown in the figure is routed from the lower left of the second wheel disc 122, but this is not necessary. The cable sample 200 can also be routed from the upper left of the second wheel disc 122. ), to achieve control of the bending direction and bending radius of the cable sample 200 during the test. According to the test requirements, the installation position of the second wheel disc 122 can be adjusted in the horizontal direction of the track bar 121, so that the horizontal distance between the first wheel disc 112 and the second wheel disc 122 can be adjusted according to the specifications, bending softness and test requirements of the cable sample 200.

[0036] Furthermore, the diameter of the second wheel disc 122 is usually designed to be smaller than the diameter of the first wheel disc 112 to increase the adjustment range of the bending direction. In addition, the second wheel disc 122 of different sizes can be replaced according to the actual needs of the test.

[0037] The moving assembly 130 is arranged on the horizontal side of the second wheel assembly 120 away from the first wheel assembly 110, and includes a slider 131, a vertical moving track 132 and a horizontal moving track 133. The slider 131 is fixedly connected to one end of the cable sample 200, and the slider 131 is slidably mounted on the vertical moving track 132, and is used to drive the cable sample 200 to move vertically up and down along the vertical moving track 132, so as to test the performance of the cable sample 200 under suspended force movement and the flexibility under a certain curved path. The vertical moving track 132 is slidably mounted on the horizontal moving track 133. In this embodiment, the upper end of the vertical moving track 132 is slidably connected to the horizontal moving track 133, and is used to drive the cable sample 200 to move horizontally back and forth along the horizontal moving track 133, so as to test the performance of the cable sample 200 under suspended force movement and the flexibility under a certain curved path.

[0038] The present invention sets the vertical movable track 132 and the lateral movable track 133 which can be linked. On the one hand, when the vertical movable track 132 is fixed at a certain position of the lateral movable track 133, the vertical movable track 132 can be used alone to adjust the vertical spacing between the slider 131 and the second wheel assembly 120, so as to test the reciprocating movement of the cable sample 200 only in the vertical direction; on the other hand, when the slider 131 is fixed at a certain position of the vertical movable track 132, the horizontal spacing between the vertical movable track 132 and the second wheel assembly 120 can be used alone to test the reciprocating movement of the cable sample 200 only in the horizontal direction; on still another hand, the cable sample 200 can also be tested to reciprocate in both the vertical and horizontal directions at the same time.

[0039] The driving device 140 is connected to the moving assembly 130 and is used to control the movement of the slider 131 and the vertical moving track 132, so that the slider 131 and the vertical moving track 132 can reciprocate according to set parameters. The driving device 140 can be an electric driving device or a pneumatic driving device.

[0040] The control console 150 is electrically connected to the driving device 140. The control console 150 includes a display screen, a start / stop button, and a stop button for setting parameters. The display screen is electrically connected to the driving device 140 through a control circuit, and is used to set parameters such as the running distance, number of times, and speed of the vertical moving track 132 and the horizontal moving track 133.

[0041] The load-bearing device 160 is a load-bearing frame, which is connected to the other end of the cable sample 200 through a load-bearing mesh 170. The load-bearing device 160 is used to fill sandbags or other items of a certain weight to make the cable sample 200 subject to a certain gravity in a suspended state, and the specific weight is adjusted according to actual test requirements.

[0042] The load-bearing mesh 170 is woven with multiple strands of steel wire, and the first end forms a mesh-shaped mesh for hooping the cable sample 200; the second end forms a wire rope loop, and the load-bearing device 160 is hung on the second end of the load-bearing mesh 170 through a hook. When the second end of the load-bearing mesh 170 is stressed, the first end thereof shrinks and hoops the cable sample 200, ensuring that the cable sample 200 is evenly stressed without damaging the cable sample 200.

[0043] like Figure 2 As shown, the present invention provides a cable suspension force movement test method, using Figure 1 The cable suspension type force mobile test equipment shown in the figure is used for testing, which specifically includes the following steps:

[0044] S1. Select a finished cable for testing as a cable sample 200, connect one end of the cable sample 200 to the load-bearing device 160 through the load-bearing mesh 170, and place the other end of the cable sample 200 on the vertical movable track 132;

[0045] The finished product performance test of the cable sample 200 was qualified and each wire core was conductive without problems such as conductor breakage.

[0046] S2, setting the test parameters on the display screen of the control console 150 and activating the start and stop buttons to start the test;

[0047] S3. After a period of operation according to the test parameter settings, a circuit connection test is performed on both ends of the cable sample 200 to test the conductivity of the cable sample 200 during the test. If the cable sample 200 is not conductive, the test is judged to be over, otherwise, the subsequent test is continued;

[0048] Among them, the circuit connection test at both ends of the cable sample 200 can be completed directly on the cable suspension force-bearing mobile test equipment, that is, when operating step S1, a certain length can be reserved at both ends of the cable sample 200, and they are directly connected to the control console 150 through conductive lines. After a certain number of tests, the two ends of the cable sample 200 and the conductive lines are connected, and the electrical performance results of whether they are conductive can be directly checked on the display screen of the control console 150.

[0049] S4. Complete the test and test the appearance and electrical properties of the cable sample 200 to obtain corresponding test results.

[0050] The appearance test is to observe with naked eyes whether the cable sample 200 has bulging, wear and tear, etc.

[0051] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A cable-suspended force-bearing mobile testing device, characterized in that: include a first disc assembly on which a cable sample is wound; A second wheel assembly is arranged obliquely below the first wheel assembly and is used to control the bending direction of the cable sample; A moving assembly, arranged on a horizontal side of the second wheel assembly away from the first wheel assembly, for fixing one end of the cable sample and driving the cable sample to reciprocate in a vertical direction and / or a horizontal direction; A driving device, connected to the moving component, for controlling the movement of the moving component; A control console, electrically connected to the driving device, for setting test parameters; The load-bearing device is connected to the other end of the cable sample.

2. The cable suspension type force-bearing mobile testing equipment according to claim 1, characterized in that: The first wheel assembly comprises a fixing bar and a first wheel. The wheel center shaft of the first wheel is fixed on the fixing bar, and the first wheel can rotate around its wheel center shaft.

3. The cable suspension type force-bearing mobile testing equipment according to claim 2 is characterized in that: The second wheel disc assembly includes a track bar and a second wheel disc. The wheel center rotating shaft of the second wheel disc can be adjusted in the horizontal direction on the track bar, and the second wheel disc can rotate around its wheel center rotating shaft.

4. The cable suspension type force-bearing mobile testing equipment according to claim 3 is characterized in that: The diameter of the second wheel disc is smaller than the diameter of the first wheel disc.

5. The cable suspension type force-bearing mobile testing equipment according to claim 1, characterized in that: The moving assembly comprises a slider, a vertical moving track and a horizontal moving track. The slider is fixedly connected to one end of the cable sample and is slidably mounted on the vertical moving track. The vertical moving track is slidably mounted on the horizontal moving track.

6. The cable suspension type force-bearing mobile testing equipment according to claim 1, characterized in that: The load-bearing device is connected to the other end of the cable sample through a load-bearing mesh; the load-bearing mesh is woven with multiple strands of steel wire, and the first end forms a grid-like mesh for hooping the cable sample; the second end forms a wire rope loop, and the load-bearing device is hung on the second end of the load-bearing mesh through a hook; when the second end of the load-bearing mesh is subjected to force, its first end contracts and clamps the cable sample.

7. The cable suspension type force-bearing mobile testing equipment according to claim 1, characterized in that: The control console includes a display screen, a start / stop button and a stop button for setting test parameters.

8. The cable suspension type force-bearing mobile testing equipment according to claim 1, characterized in that: The cable sample meets the finished product performance test and is qualified before the test, and each wire core is conductive.

9. A cable suspension force movement test method, characterized in that: The test is performed using the cable suspension type force-bearing mobile test device as described in any one of claims 1 to 8, comprising the steps of: S1. Select a cable sample for testing, connect one end of the cable sample to the load-bearing device through a load-bearing mesh, and place the other end on a vertical moving track; S2, setting test parameters on the control console and starting the test; S3. After a period of operation according to the test parameter settings, a circuit connection test is performed on both ends of the cable sample. If the test is not conductive, the test is considered to be over, otherwise, the subsequent test is continued; S4. Complete the test, test the appearance and electrical properties of the cable sample, and obtain corresponding test results.

10. The cable suspension force movement test method according to claim 9, characterized in that: In the step S1, the two ends of the cable sample are respectively connected to the conductive circuit, and the conductive circuit is connected to the control operation table; the two ends of the cable sample and the conductive circuit are conductive in the step S3.

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